Switch and contact mechanism for electric-current-regulating plugs and sockets



A. PAPJNI/ 'SWITCH AND CONYACT MECH'ANLSM FOR ELECTRIC CURRENT HEGULATING PLUGS ND SOCKETS.

APPLICATION FILED 1ULY 8, 1920.

PatentedJ une 28, 1921.

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INYENTQR; y UVW/5w@ www? ` UNITED sTArgsPATENT OFFICE.

ANTONIO PAPINI, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO A. MECKY COMPANY, OF PHILADELPHIA., PENNSYLVANIA, A CORPORATION OF PENN- SYLVAN IA.

SWITCH AND CONTACT MECHANISM FOR ELECTRIO-CURRENT-REGULATING PLUGS AND SOCKETS.

Specification of LettersrPatent. Patented June 2.8, 1921 Application led July, 1920. Serial No. 394,725.

To all whom 'it mag/,concern Be it known that I, ANTONIO Parini, a subject of the King of Italy, having resided in the United States one year last past and having declared my intention of becoming a citizen thereof residing in the city and county of Philadelphia, btate of Pennsylvania, have invented a new and useful Switch and Contact Mechanism for Electric- Current-Regulating Plugs and Sockets, of which the following is a specification.

My invention relates particularly to `and is an improvement upon a switch and contact mechanism for electric current regulating plugs and sockets, which forms the subjectmatter of U. S. Letters Patent No. 1,342,061, Granted under date of June 1st, 1920, to A. Iecky Company, a corporation of Pennsylvania,as my assignee; and its particular object is such an improvement in the porcelain body of my former mechanism as enables me eifectually to mount in connection with it electric conductors entering through an insulating bushing in the cover cap and which conduct the electric fluid through terminals of preferred form and assemblage, not only to the socket into which the lighting bulb or.

other device to be energized is introduced, but also to and in connection with the contact lever which carries the finger which operates upon the current conveyers or plates which project through the porcelain body in a manner illustrated and described in my foregoing patent and forming also a part of certain other inventions of mine in regulating plugs and sockets to which it is unnecessary in this application to make further reference.

W' ith the foregoing general objects in view, my invention comprehends a switch and contact mechanism which embodies and embraces an internal porcelain body, which possesses the characteristics of form and function hereinafter particularly described in preferred form and illustrated in the accompanying drawings, the special features in which my invention particularly consists being specifically recited in the claims.

For the purpose of illustrating my invention, I have shown in the accompanying drawings a form thereof which is at present preferred by me, because in practice it will give satisfactory and reliable results.

It is to be understood, however.y that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and Organikzation of these instrumentalities as herein shown and described.

Figure 1 represents a sectional elevation of a switch and contact mechanism embodying a preferred form of my invention,-all of the parts being assembled in operative and normal relationship. o

F"g. 2 represents a central, sectional, side elevation of4 my novel porcelain body removed from the shell or casing.

`Fig. 3 represents a top plan view of the body represented in Fig. 2.

Fig. 11 represents on an enlarged scale a fragmentary sectional plan on the line 4--4 of Fig. 1.

Fig. 5 represents a central, sectional detail of the basal portion of thecase of Figs. 2 and 3, illustrating a convenient means for attachment of the plug-securing device, and taken on the line 5 5 of Fig. 1.

Fig. 6 represents a wiring diagram typi- 'fying the assemblage of conductors and parts connected with the conductors and their adjunctive devices.

Similar numerals of reference indicate corresponding parts.

Referring to the drawings 1 designates an inclosing casing, being a cylindric shell of metal of the forni illustrated and of the character set forth in my former patent.

2 designates the socket or lamp holder. which is inclosed in the depending bottoni portion of the casing and secured to my novel porcelain case 3 in the manner later on described.

L designates the cover cap ofmy device as an entirety, which is secured to the upper edges ofthe casing by a circular flange 5 or otherwise as convenience of manufacture may dictate, a good union being by attach ing screws 6, as illustrated. The dome or apex of the cover cap isopen and to the opening is applied an insulating `bushing 'i' through which pass the conductors 8 and 9,-8, in the organization illustrated, being the conductor through which the current enters the device, and 9 'that through which it passes out of it.

My novel porcelain case 3, in which, as explained, the novelty of this invention more particularly resides, is Yformed with a fiat front face 10, against which is mounted the contact lever' 11 in precisely the manner set forth in my patent referred to. My case, however, except as to its flat face, diii'ers from the case or body, as I have called it, of my former patent, in the following particulars 12 designates a carrying head, which is recessed t0 form what I call a head chamber 13, the rim 14 of which bears against a circular flange 5 of the cover cap, as best illustrated in Fig. 1, the chamber serving as a receptive formation within which upon the left of the center, as illustrated in Figs. 1 and 2, is introduced and secured a conducting bracket 15, a binding post 16 connectingV with the conductor 9. A connecting screw 17, which passes through a washer 1S, makes electrical contact with the uppermost of the series of plates 19, against the outwardly eX- tending projections 20 of which the finger 21 of the contact lever 11 is adapted to bear, as best shown in Fig. 4.

22 designates an aperture extending completely through the left-hand side or' the carrying head 12, through which the-connecting screw 17 passes,-tlie aperture being of greater diameter than the body of the screw to insure easy introduction.

23 designates a flat plate of brass or other preferred metal, which lies upon the righthand side 0f the case or body 3 and is held in place by a binding post 24 and also by the head of the axial bolt 25, which passes down through the hollow interior of a depending tubular extension 2G of the case, which, in the assemblage of the plates 19, secures them axially within the hollow interior oi the body.

The binding post 24 enters within a socket 28 formed in the carrying head of the body, and is preferably rimmed as at 29 to form a seat or bearing upon which the flat plate 23 rests.

In order firmly to locate the plate 23 and also the outer face of the upwardly extending portion of the bracket 15, I form upon the carrying head 12 of the case a locating device or locator therefor cast as a part of the body and extending upwardly as a vertical end wall 30 and extending laterally as two downwardly inclined side walls 31 and 32, between which the head of the bolt 25 passes, and between which, also, the plate 23 is located or positioned.

The downward incline of these side walls permits of the easy introduction of the conductor 8 to beneath the binding post 24, and the outer surface of the end wall 30, as already explained, serves as a locating means against which is erected and bears the vertical member of the bracket 15.

The side walls of the case or body, which the numeral 3 especially designates, which form within them the hollow lower interior of the body, and which are concentric with the tubular extension 2G, are internally closed by a bottom plate 33, see Fig 5, through a central aperture 34 in which passes and extends the lower end of the bolt 25.

Beneath. the bottom plate 33 a metallic washer is secured by a locking plate ring 36, against which a nut 37 on the threaded end of the bolt 25 bears and effects the re-.

tention o the lamp holder 2 in electrical contact with the bolt.

38 designates the lips or deflected Hanges by which the attachment oit the contact lever is, as in the construction of my patent referred to, effected.

The mounting` of the'case or body having` now been described andthe connection of the adjunctive elements which complete the electrical circuit of the device as an entirety having also been explained, it will be easily understood from a reference to the diagram of Fig. 6, how the electric circuit is formed, thus Electric current from a given source entering through conductor 3 passes through plate 23, bolt 25, looped conductor 39,-being the conductor of the lamp or device to be energiZed,-lamp holder 2, contact lever 11, finger 21, a selected projection 20, ccnnecting screw 17, bracket 15 and outleading conductor 9.

The form in which I have made my case or body as applicable to the eifective application and connection within the circuit of the plate 23, the bolt 25 and the bracket 15, will from the description already given be also easily understood.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device o1l the character described, in combination with an inclosing casing,- a case or body,-electric contacts mounted upon the upper surface of said case,-plates contained within said case and encompassing a tubular axial extension integral therewith,-a socket secured to the base of the casing-and assembled electrical connections Yfor completing the circuit of the device.

2. In a combination with the inclosing casing oi a switch and contact mechanism for current regulating plugs and sockets,- an inclosing case of refractory material, which embodies a carrying head the upper surface of which forms a depressed head chamber, is provided with an upwardly extending locater composed of an end wall and side walls, with a tubular extension depending'from said carrying head and axially disposed within the hollow interior of said caseand a bottom plate which closes said interior.

3. In combination with the inclosing casing of a switch and contact mechanism for current regulating plugs and sockets,-an inclosing case of refractory material, which embodies a carrying head the upper surface of which forms a depressed head chamber, is provided with an upwardly extending locater composed or' an end wall and side walls, with a tubular extension depending from said carrying head and axially disposed-within the hollow interior of said case, and with a bottom plate which closes said interior,-electrical Aconductors extending into the inclosing casing, one of which con nects with a flat plate confined within the loeater of the carrying head, and the other of which is electrically connected with a conducting bracket superposed upon said carrying head,-an assemblage 01"' conducting plates within the hollow interior of said case,-a socket or lamp holder beneath the hollow interior of the case and in the base of the casing,-an axial bolt in electrical connection with both the flat plate on the case and the socket. or lamp holden-and electrical connections between the socket or lamp holder and the conducting bracket.

4. As an `article of manufacture, a case for a current regulating mechanism, which comprises a carrying head, a chamber above said head encompassed by a circular rim, a locater or said head embodying an end wall and side walls, a chamber below said head, a tubular member axial of said cham" ber and extending downwardly from said head, and an inclosing bottom plate for said chamber.

ANTONIO PAPINI.

Witnesses:

JOHN A. lVinnnRsHErM, N. BUssINGER. 

